// Copyright 2009 The Go Authors.  All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

#include "runtime_types.h"
#include "string.h"
#include "type.h"

// Compare type descriptors for equality.  This is necessary because
// types may have different descriptors in different shared libraries.
// Also, unnamed types may have multiple type descriptors even in a
// single shared library.

_Bool
__go_type_descriptors_equal(const struct __go_type_descriptor *td1, const struct __go_type_descriptor *td2)
{
	if (td1 == td2)
		return 1;
	// In a type switch we can get a NULL descriptor.
	if (td1 == NULL || td2 == NULL)
		return 0;
	if (td1->__code != td2->__code || td1->__hash != td2->__hash)
		return 0;
	if (td1->__uncommon != NULL && td1->__uncommon->__name != NULL) {
		if (td2->__uncommon == NULL || td2->__uncommon->__name == NULL)
			return 0;
		return (__go_ptr_strings_equal(td1->__uncommon->__name, td2->__uncommon->__name)
			&& __go_ptr_strings_equal(td1->__uncommon->__pkg_path, td2->__uncommon->__pkg_path));
	}
	if (td2->__uncommon != NULL && td2->__uncommon->__name != NULL)
		return 0;
	return __go_ptr_strings_equal(td1->__reflection, td2->__reflection);
}
